Today’s health challenges are formidable, including an ageing population; unhealthy lifestyles; the burden of behavioural determinants leading to increased mortality and morbidity from noncommunicable diseases; the rapid transfer of infectious pathogens and the potential for global pandemics; national disasters.

Among these are jobs and education, economic inequality, an aging population with health problems, and climate change and energy needs.

The four major NCDs, accounting for 80% of all premature NCD-related deaths globally, comprise cardiovascular diseases (17.9 million deaths); cancers (9 million deaths); chronic respiratory diseases (3.9 million deaths); and diabetes (1.6 million deaths).

• Physical Activity and Nutrition.
• Overweight and Obesity.
• Tobacco.
• Substance Abuse.
• HIV/AIDS.
• Mental Health.
• Injury and Violence.
• Environmental Quality.

The 21st (twenty-first) century is the current century in the Anno Domini era or Common Era, in accordance with the Gregorian calendar. It began on January 1, 2001 (MMI), (MMC). The 21st century is the first century of the 3rd millennium.

We live in the 21st Century, that is, the 2000s. Similarly when we say “20th Century,” we are referring to the 1900s. All this because, according to the calendar we use, the 1st Century included the years 1-100 (there was no year zero), and the 2nd Century, the years 101-200. Similarly, when we say 2nd Century B.C.E.

These are the characteristics of a 21st Century Teacher: Facilitate and inspire student learning and creativity so that all students achieve in the global society. Work with their students to co-create new learning opportunities. Use data to support student learning and program improvements.

The 20th Century consists of the years 1901 through 2000 and will end Dec. 31, 2000. The 21st Century will begin Jan. 1, 2001.”

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The year zero does not exist in the Anno Domini (AD) system commonly used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year 1 BC is followed by AD 1.

Y2K

The first 2000 years end with the year 2000, and the next thousand start with 2001, the first year of the third millennium. So we should definitely celebrate the official calendar millennium on January 1, 2001. But there is another millennium to celebrate: the millennium of the 2000s, the years that begin with a 2.

A decade is a period of 10 years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς, romanized: dekas, which means a group of ten. Decades may describe any ten-year period, such as those of a person’s life, or refer to specific groupings of calendar years.

The Year 2000 was the start of the new millennium. The New York Yankees defeat the New York Mets in five games in the 2000 World Series. It was the first ‘Subway Series’ since 1956. The U.S. population tops 282 million.

20 things from the year 2000 that will make you feel nostalgic

• Craig David dominated the charts.
• The world didn’t end with Y2K.
• The Millennium Dome opened… but didn’t last very long.
• Destiny’s Child conquered the charts.
• Kylie made an almighty comeback.
• Sophie Ellis-Bextor and Posh Spice featured in the biggest chart battle since Britpop.
• It was a prime time for pop.

Generation Z (people born from 2000 up to the present day) have been raised with screens.

Y2K bug, also called Year 2000 bug or Millennium Bug, a problem in the coding of computerized systems that was projected to create havoc in computers and computer networks around the world at the beginning of the year 2000 (in metric measurements, k stands for 1,000).

The 2020s (pronounced “twenty-twenties”, shortened to “the ’20s”) is the current decade of the Gregorian calendar that began on 1 January 2020, and will end on 31 December 2029.

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Latin-derived numerical names

A 75th anniversary can be referred to as a diamond jubilee occasionally, but it is commonly used to refer to a 60th anniversary. An anniversary of 100 years is simply called a centenary.

A centenarian is a person who has reached the age of 100 years.

Silver jubilee